Product details:
 

Model No.: FLS-EC003 

.3-digital voltage display (Red/Blue/Orange)

.Sandblast finish                                        

.Electronic polarity protection circuit,automatically alarms When the 
polarity is reversed and the voltmeter will display low voltage

.Over-voltage protection circuit                                                             

.Working temperature:-40 to 105 degrees centigrade                                 

.Unique scallops style mounting brackets&hardware included
.Extreme Low E.S.R.:less than 0.0015ohm
.Size:76×220mm
.Working Voltage:10V-20V
.Surge Voltage:24V 
.Max Capacity:5.0F